Calculating-machine.



W. P. QUENTELL. CALCULATING MAQHINE. APPLIOATION FILED MAY 4, 1908.

912,729. Patented Feb. 16, 1909.

4 SHEETS-SHEET 1 S S S f S WITNESSES: INVENTOR ATTORN EY WITNESSES:

W. P. QUENTELL.

GALGULATING MACHINE.

APPLICATION FILED MAY 4, 190a.

Patented Feb. 16, 1909.

4 SHEETS-SHEET 2.

ATTOR'NEY W. P. QUE NTELL. CALCULATING MACHINE. APPLICATION FILED MAY 4, 1908.

Pafiented Feb. 16, 1909.

4 SHEETS-SHEET 3.

WITNESSES: INVEN 'I DR I @gnidl ATTORNEY W. P. QUENTELL. CALCULATING MACHINE. APPLICATION FILED MAY 4, 1908.

912,729. Patented Feb. 16, 1909. v

4 SHEETS-SHEET 4.

INVENTOR MZMMPQWHZYZZ ya/w! ATTORNEY UNITED STATES PATENT OFFICE.

WILLIAM P. QUENTE'LL, OF STAMFORD, CONNECTICUT.

CALGULAQIHGMACIIINE Specificati n oi Letters latent.

Patented Feb. 1 reps.

Application filed flay 4, 1908. Serial No. 48932::

1' b all ie/tom it may concern:

Be it known that I, WILLIAM P. Q EN- TELL, a citizen of the United States, residing at Stamford, in the county of Fairfield and State of Connecticut, have invented new and useful Improvements in Calculating Ma in the following specification and claims and illustrated in the annexed drawing in which:

Figure 1 is a plan view of a calculating machine embodying this invention. Fig. 2

is a side elevation of Fi 1 with one side of the frame sectionedo to expose certain parts. Fig. 3 is a view like Fig. 2 with parts in a .difiierent position than in Fig. 2. Fig. .4 is a sectionalong line y y Fig. 1. Fig. 5 shows a drive shaft with adjacent parts. Fig. 6 an inverted plan view of a shaft showing the spiral or stepped arrangement o notches.

In this drawing is shown a frame a in which a series or rows of keys b can move up a o n T d sc pt o of one y with its operation explains the others. Each key is normally held raised .or returned by a spring 0' connected to a suitable point or bar of the machine. The lower end of the key Z) bears on the horizontal ortion of a bar (1 formed of a piece of ang e iron. The rear end of the bar at is mounted for sliding and rocking motion in a suitable part of the frame of the machine as shown in U. S. Letters Patent No. 888262 granted to myself May 19, 1908, but inasmuch as such structure forms no part of the present invention it is thought unnecessary to illustrate and describe it here.

Attached to the forward end of the vertical portion of the bar 1 is a rod which has a swivel hearing or connection in a connecting piece p which can be readily formed of sheet or fiat metal bent with two lips .to term a bearing for the swivel end of bar d and between which the spring 6 can coiled about the .end part of bar (1. Washers q placed each side of the lips onto the bar d will prevent the latter u 1- lug .out of place but at the same time alpw we me to swivel.

When a key I) is depressed its lower end bears .upon the horizontal partof car (2 and the latter is caused to rock onits pivots. h s eases the s o der f o a no h formed in the horizontal portion of the bar from engagement with a detent g and the bar d is caused by a spring I, having one end connected to the connecting piece 10 and its other endconneoted to a suitable part of the frame of the machine, to move longitudinally toward the rear of the machine; The SPrin 8 tend t n t e bar back on it swive to its normal position as it is moved longitudinally in the opposite direction by the drive lever mas presently explained. As the bar (2 is returned the catch f again engages the detent g.

The connecting piece p is connected to a pawl carrier 1 shaped like a bell crank lever and on which the pawl s is mounted. Pawl sis pivoted or swings on the pawl carrier and is held by spring 1. in engagement with transmission gear a which conveys motion to a pinion art of the number wheel 2.

On t e depression of a key the spring it pulls back the bar d a certain distance for one of its pins i to look into a notch in the key stem to hold the latter depressed and the pawl .9 clicks back a certain number of teeth of gear u accordin to the number of the deressed key. As t c drive lever orhandle m is actuated to return the pawl carrier the pa t k to h g a te t 2 an m v such s e o mo e teps sw l ed f r- The pawl is arrested by a stop 3 which con;- prises four steps or arresting points marked res actively 4, 5, 6, 7 the -function of which wil presently appear. The. stop 3 is mounted on pivot or stud 8 and aspring 9 tends to hold one end portion of the stop against a pin 10.

Each'number wheel 2 has the usual notations 1, 2, 3, 4, 5, 6, 7,8,9, 0. In a series of such wheels of course provision must be made as each revolution of a wheel is being completed to carry over or impart a movement or step to the wheel of the next higher denomination.

Each number wheel carries a finger 11 which as it is carried about taps or presses the nose 12 of stop piece 3 to tilt the latter to move stop shoulder -5 back clear of the pawl s andallow the latter to move along an additional step or the distance of one tooth or number.

"'ilhe stop 3 is normally held by spring 9 in position for itsstep 5 t9 arrest the movement of the pawl s Fig. 2). But when finger 11 arrested by from one column to another,

- .shaft.

. pressed the shaft 23 is rocked to bring notch taps nose 12 the lower end of stop 3 is swung back so that catch 13 can hook over the stop 3 Fig. 3 and hold the step 5 back for the pawl s to be arrested against the step 4.

The hook 13 is in form of a bell crank lever fulcrumed at 14 and spring 15 tends to cause the hook 13 to snap into engagement with stop piece 3. The release or unhooking of part 13 is effected by bar 16 on arms 17 mounted one at each side of the machine. The arms 17 pivot on cross bar '18 and are swung by links 19 and arms20.

The spring h draws back the connection p with carrier 7 for pawl s to click back a greater or less number of teeth. On the re turn of the carrier and pawl the teethwith the number wheel are advanced a corresponding degree. The return movement of the connection 7) is effected by drive lever m fixed to a rock shaft 23.

The carrier 1" is mounted loosely about shaft 23 and on said carrier is pivoted a pawl or catch 24 which passing alongside the carrier contacts with the shaft 23. This pawl is connected by link 25 with bell crank lever 26 fulcrumed on carrier r. When the spring It moves carrier 7" in one direction the catch 24 slides over the smooth part of the circumference of shaft 23 toward notch 27 in such Upon the drive lever m being de- 27 to catch 24 and returnparrier 1' with pawls.

By the spring h pawl s is caused to click over the teeth of its gear wheel but when moving in the opposite dire'ction the pawl 8 takes into its gear to rotate the same. Such gear can rotate in but one direction as a lock pawl 28 is suitably provided.

In order to carry each carrying arm 1' of each column to its stop position where it is stop-3 and in order to carry over it is necessary to carry each arm 1- successively to its stop 3 and then release shaft 23 from the arm 1* of the lower column and still keep said shaft in engagement with arm r of the higher columns and then release each higher column successively. As each column is released each spring h snaps its bar d against stop 9 thus holding the arm 1' in its normal position.

The movement of each arm 4 to the stop 3 and the subsequent release of each shaft 23 I from the arm 1' is effected by shaft 23 bringing its nQtchZTtoengage pawl 24 and moving arm 1 until bell crank lever 26 contacting with the stop shoulder 7 or 6 causes this bell crank to lift pawl 24 out of engagement with shaft 23. This will allow shaft23 to continue moving and successively operate each higher column. For this purpose the notch 27 of each lower column is shown somewhat in advance of or out of line with the notch at "each higher column. Such non 'alined or stepped arrangement of notches action of spring 15.

- of movement to the arms,

27 in shaft 23 is attempted to be indicated by dotted lines in big. 5. As the drlve. lever on moves shaft 23 to bring notches or shoul- 'ders .27 to catches 24 the unit column having its number mechanism set slightly in advance of the tens column the first named column will have its parts completely set somewhat in advance of the complete setting of the succeeding column. Similarly for the successive setting of columns of higher denomination. The return of driver m to stop stud 29 is effected by spring 30. On shaft 23 is a pin or projection 31 which extends into a slot in the hollow hub of arm 20 which surrounds shaft'23 in form of a sleeve to form a loose connection. As the shaft 23 is returned underthe action of spring 30 the pin 31 striking the right hand terminal of the slot in sleeve or ring shaped hub will swing arm 20 to the right and impart a like movement to the link 19 and bail or arms 17 for rod 16 to swing catch 13 against the This movement will free or unlock latch 13 from stop piece 3 so that spring 9 can return the stop piece from the retracted position Fig. 3 to the position shown in Fig. 2.

What I claim is 1. In a calculating machine .a'series of columns of calculating mechanisms, a main actuating shaft, individual connections between'each column and shaft, means for automatically locking the connection of each column to the shaft and means for automatically and successively unlocking said connections from the shaft.

2. The combination in an adding machine, of an actuating shaft, number wheels, connections between the shaft and number wheels, catch portions carried by the shaft and pawls for engaging the catch portions and carried and o p 3. In an adding machine an actuating shaft, number wheels, arms actuated by said shaft, means for connecting and disconnecting the arms and shaft, connections between said arms and number wheels for transmit'-' ting motion from thearms to the number wheels and movable ste of the arms for allowing different degrees each step being moved by the number wheel of a lower column to allow carry over to a higher column.

4. In an adding machine an actuating shaft, number wheels, arms actuated bysaid shaft, means for connecting and disconnecting the arms and shaft, connections between said arms and number wheels for transmitting motion from the arms to the number wheels, movable sto s for the arms'moved by the number whee of lower columns, and means for holding the stop in the position into which it has'been shifted by the number wheel.

5. In an adding machine an actuating erated by said connections.

s in the paths stop piece to shift the same and a latch forinto which it hasbeen shifted by the numberwheel, and means for releasing said stop from sa1d position. 6. In an adding machine a number wheel with driving mechanism comprismg a carrymg arm and pawl, a shaft on which the carrying arm is loosely mounted, a catch carried by the arm for engaging the shaft, a lever for freeing the catch from the-shaft, and a stop iece for arresting the pawl carrying arm and for actuating the lever to free the catch.

' 7. In an adding machine a number Wheel with driving mechanism comprising a carrying arm and pawl, a shaft on which the carrying arm is loosely mounted, a catch carried by the arm for engaging the shaft, a lever for freeing the catch fromthe shaft, and a stop piece for arresting the pawl carrying arm and for actuating the lever to free the catch, said number wheel being made to engage the holding the stop piece when shifted.

8.. In an adding machine a number wheel with actuating mechanism therefor, a drive shaft for said mechanism, means for connect'' ing and disconnecting the actuating mechanism and shaft, a stop for the. actuating mechanism, means for shifting the sto a latch for .the stop, and a releasing arm or the latch having a loose connection with the drive shaft.

9. In an adding machine a drive shaft, a number wheel having its actuating mechan ism loose on the shaft, a catch for releasably connecting the actuating mechanism andshaft, a stop for the actuating mechanism, a latch for the stop, a releasing mechanism for the .latch loosely mounted on the shaft and having a pin and slot connection therewith. 10. A calculating machine comprising a shaft, a pawl carrying arm mounted on said shaft, means for releasably connecting the arm and shaft means for releasing said connecting means,and calculating mechanism actuated by the pawl carrying arm.

11.. In a calculating machine a main shaft having a shoulder, a catch portion made to engage the shoulder, apawl carrying arm on which the catch is mounted, a pawl onthe arm, a number wheel actuated by the pawl,

- a bell crank lever on the arm, and a stop for arresting the pawl and engaging the bell crank lever to release the catch.

12. An adding machine comprising a drive shaft, a awl actuating arm looselymounted on the s iaft and shaft engaging means carried by said arm, said shaft having shoulders for engagement by said engaging means, said shoulders being arranged out of line to allow successive arms on the shaft to successively complete their movements.

13. An adding machine comprising a main shaft, an actuating arm, locking means carried b the arm and made to connect the shaft an arm, a ste ped stop piece for unlocking the lock, said able to vary the steps engaged by the locking means for unlocking at different periods.

14. An adding machine comprising a number wheel with actuating gear and pawl,

an actuating arm for the pawl, locking means carried by the arm, a shaft engaged by the locking means and on which shaft the arm is loosely mounted, a bell crank lever carried by the arm and connected to the locking means, a stop actuated by the number Wheel and made to engage the bell crank lever, a latch for engaging the stop when actuated by the number wheel, a release for the latch, an actuating arm for the release loosely mounted on the shaft, and a loose connection for uniting the actuating arm and shaft.

15: An adding machine comprising a number wheel with actuating gear and pawl, an actuating arm for the awl, locking means carried by the arm, a s aft engaged by the locking means and on which shaft the arm is loosely mounted, a bell crank lever carried by the arm and connected to the locking means, a stop having various ortions for stop plece being shift-.

engaging the actuating arm an bell crank WILLIAM P. QUEN TELL. Witnesses:

CHRISTIAN ALMS'IAEDT, EDWARD WIEsNER. 

